Home / 10,015.32-15,006.36-5,328.72

Finding the Fourth Proportional to 10,015.32, 15,006.36 and 5,328.72

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Solution

The fourth proportional to 10,015.32, 15,006.36 and 5,328.72 is: 7,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.32 : 15,006.36 = 5,328.72 : x
  2. Step 2: Convert to fraction form
    10,015.32/15,006.36 = 5,328.72/x
  3. Step 3: Cross multiply
    10,015.32x = 15,006.36 × 5,328.72
  4. Step 4: Simplify right side
    10,015.32x = 79,964,690.66
  5. Step 5: Solve for x
    x = 79,964,690.66/10,015.32
  6. Step 6: Final answer
    x = 7,984.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.